document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=41914>Question 41914</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve\r<BR>\n" );
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document.write( "having problems with this\r<BR>\n" );
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document.write( "d(d-3)=40\r<BR>\n" );
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document.write( "show work </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #27032 by </B><A HREF=/tutors/aboutme.mpl?userid=tutorcecilia><B>tutorcecilia(2152)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=tutorcecilia><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=tutorcecilia><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=27032\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> d(d-3)=40<BR>\n" );
document.write( "First, simply by using the distributive property:<BR>\n" );
document.write( "d^2 – 3d =40<BR>\n" );
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document.write( "Since the highest degree is 2 (d^2) try to set it up as a quadratic polynomial.  Set the entire equation equal to zero by subtracting 40 from both sides.<BR>\n" );
document.write( "d^2 – 3d - 40=0<BR>\n" );
document.write( "Factor:<BR>\n" );
document.write( "(d+5)(d-8)=0<BR>\n" );
document.write( "Set each factor equal to zero and solve for d:<BR>\n" );
document.write( "d+5= 0<BR>\n" );
document.write( "d = -5<BR>\n" );
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document.write( "d-8=0<BR>\n" );
document.write( "d =8<BR>\n" );
document.write( "The possible solution set is 3 and/or 8.\r<BR>\n" );
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document.write( "Check each solution by plugging it back into the original problem:<BR>\n" );
document.write( "d(d-3)=40<BR>\n" );
document.write( "-5(-5-3)=40<BR>\n" );
document.write( "-5(-8)=40<BR>\n" );
document.write( "40=40.<BR>\n" );
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document.write( "d(d-3)=40<BR>\n" );
document.write( "8(8-3)=40<BR>\n" );
document.write( "8(5)=40<BR>\n" );
document.write( "40=40<BR>\n" );
document.write( " </SPAN>\n" );
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